CN215770491U - Contact pin type very low frequency buzzer with feedback - Google Patents
Contact pin type very low frequency buzzer with feedback Download PDFInfo
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- CN215770491U CN215770491U CN202122119367.3U CN202122119367U CN215770491U CN 215770491 U CN215770491 U CN 215770491U CN 202122119367 U CN202122119367 U CN 202122119367U CN 215770491 U CN215770491 U CN 215770491U
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Abstract
The utility model discloses a contact pin type low-frequency buzzer with a feedback electrode, which comprises a self-excitation buzzer, wherein the self-excitation buzzer consists of a buzzer substrate, a piezoelectric ceramic piece and a bulb feedback electrode, wherein the piezoelectric ceramic piece is positioned in the middle of the buzzer substrate; the diameter of the piezoelectric ceramic piece is the same as that of the inner cavity of the shell, and a first pinhole, a second pinhole and a third pinhole are distributed on the shell at equal angles; the self-excitation buzzer is connected with the piezoelectric ceramic piece through a contact pin; the contact pin type low-frequency buzzer with the feedback electrode uses the self-excitation buzzer and adopts the node support, and the diameter of the cavity inside the shell is consistent with that of the piezoelectric ceramic piece, so that the piezoelectric ceramic piece can emit larger sound pressure and the vibration frequency can be conveniently controlled; the contact pin A and the contact pin B are respectively connected to the positive pole of a power supply, and after the contact pin C is connected to the negative pole of the power supply, the self-excitation buzzer generates self-excitation frequency after being electrified, so that elastic deformation is generated, air vibration in the resonant cavity is enabled to generate sound from the sound emitting hole, and the sound can be generated without a cover plate.
Description
Technical Field
The utility model relates to the technical field of buzzers, in particular to a contact pin type extremely-low-frequency buzzer with feedback.
Background
The buzzer is a common electroacoustic device, is often seen in sounding electronic equipment, and the buzzer that uses at present is of a great variety, and can be divided into active type and passive type according to the difference of input signals, and the inside of passive buzzer does not have an oscillation source, must use the electric wave of certain frequency to drive and use, and the inside oscillation source that takes of active buzzer will sound after circular current.
Traditional bee calling organ needs apron and drain pan to cooperate each other just can the sound production, and the acoustic pressure that bee calling organ sent is little, and difficult control vibration frequency moreover.
SUMMERY OF THE UTILITY MODEL
In view of the problems mentioned in the background art, the present invention is to provide a contact pin type buzzer with feedback and very low frequency, so as to solve the problems mentioned in the background art.
The technical purpose of the utility model is realized by the following technical scheme:
a contact pin type low-frequency buzzer with a feedback electrode comprises a self-excitation buzzer, wherein the self-excitation buzzer consists of a buzzer substrate, a piezoelectric ceramic piece and a bulb feedback electrode, wherein the piezoelectric ceramic piece is positioned in the middle of the buzzer substrate;
the self-excitation buzzer is arranged in the shell, the diameter of the piezoelectric ceramic piece is the same as that of the inner cavity of the shell, and a first pinhole, a second pinhole and a third pinhole are distributed on the shell at equal angles;
the self-excitation buzzer and the piezoelectric ceramic piece are connected through a contact pin.
By adopting the technical scheme: the self-excitation buzzer is used, the node support is adopted, and the diameter of the cavity inside the shell is consistent with that of the piezoelectric ceramic piece, so that the piezoelectric ceramic piece can emit larger sound pressure, and the vibration frequency can be conveniently controlled.
Preferably, the contact pin includes contact pin A, contact pin B and contact pin C, use clockwise to be equipped with solder joint A, solder joint B and solder joint C respectively as the direction on the buzzer piece base plate, contact pin A's one end is inserted the inside of first pinhole, contact pin A's the other end with solder joint A welds, contact pin B's one end is inserted the inside of second pinhole, contact pin B's the other end with solder joint B welds, contact pin C's one end is inserted the inside of third pinhole, contact pin C's the other end with solder joint C welds.
By adopting the technical scheme: and defining the connection relation among the contact pin, the buzzer chip substrate and the pin hole.
Preferably, the shell is a circular shell, the outer side wall of the shell is integrally formed with three bosses at equal angles, and the first needle hole, the second needle hole and the third needle hole are formed in the corresponding bosses.
By adopting the technical scheme: the pinhole is further defined.
Compared with the prior art, the utility model has the beneficial effects that:
the contact pin type low-frequency buzzer with the feedback electrode uses the self-excitation buzzer and adopts the node support, and the diameter of the cavity inside the shell is consistent with that of the piezoelectric ceramic piece, so that the piezoelectric ceramic piece can emit larger sound pressure and the vibration frequency can be conveniently controlled;
the contact pin A and the contact pin B are respectively connected to the positive pole of a power supply, and after the contact pin C is connected to the negative pole of the power supply, the self-excitation buzzer generates self-excitation frequency after being electrified, so that elastic deformation is generated, air vibration in the resonant cavity is enabled to generate sound from the sound emitting hole, and the sound can be generated without a cover plate.
Drawings
FIG. 1 is a top view of a contact pin type very low frequency buzzer with feedback of the present invention;
FIG. 2 is a bottom view of the bottom shell of the present invention;
fig. 3 is a left side view of the bottom case of the present invention.
Reference numerals: 1. a housing; 11. a first pinhole; 12. a second pinhole; 13. a third pinhole; 2. a self-excited buzzer; 21. a buzzer piece substrate; 22. piezoelectric ceramic plates; 23. a bulb feedback electrode; 31. inserting a pin A; 311. welding spots A; 32. inserting a pin B; 321. a welding spot B; 33. inserting a pin C; 331. and a welding point C.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a contact pin type low-frequency buzzer with a feedback electrode comprises a self-excited buzzer 2, wherein the self-excited buzzer 2 comprises a buzzer substrate 21, a piezoelectric ceramic piece 22 and a bulb feedback electrode 23, and the piezoelectric ceramic piece 22 and the bulb feedback electrode are positioned in the middle of the buzzer substrate 21;
the self-excitation buzzer 2 is arranged in the shell 1, a sounding hole is formed in the side wall of the shell 1, the diameter of an inner cavity of the shell 1 is the same as that of the piezoelectric ceramic piece 22, the first pin hole 11, the second pin hole 12 and the third pin hole 13 are distributed on the shell 1 at equal angles, the shell 1 is a circular shell, three protruding parts are integrally formed on the outer side wall of the shell 1 at equal angles, and the first pin hole 11, the second pin hole 12 and the third pin hole 13 are formed in the corresponding protruding parts;
the pins comprise a pin A31, a pin B32 and a pin C33, wherein a welding point A311, a welding point B321 and a welding point C331 are respectively arranged on the buzzer substrate 21 in a clockwise direction, one end of the pin A31 is inserted into the first pin hole 11, the other end of the pin A31 is welded with the welding point A311, one end of the pin B32 is inserted into the second pin hole 12, the other end of the pin B32 is welded with the welding point B321, one end of the pin C33 is inserted into the third pin hole 13, and the other end of the pin C33 is welded with the welding point C331.
The structure principle is as follows: the self-excited buzzer 2 is composed of a buzzer substrate 21, a piezoelectric ceramic piece 22 in the buzzer substrate 21 and a bulb feedback electrode 23.
The shell 1 is provided with three needle holes which are respectively a first needle hole 11, a second needle hole 12 and a third needle hole 13, a contact pin A31 is inserted into the first needle hole 11 of the shell 1, and the pin at the other end of the contact pin A31 is welded with the piezoelectric ceramic piece 22 of the self-excitation buzzer piece 2 through a welding point A311; the pin B32 is inserted into the second pin hole 12, and the other end pin of the pin B32 is welded with the piezoceramics plate 22 through a welding point B321; the pin C33 is inserted into the third pin hole 13, and the other end pin of the pin C33 is welded with the piezoceramic sheet 22 by a welding point C331.
The contact pin A31 and the contact pin B32 are respectively connected to the positive pole of a power supply, and after the contact pin C33 is connected to the negative pole of the power supply, the self-excited buzzer 2 has self-excited frequency after being electrified, so that elastic deformation is generated, air vibration in the resonant cavity can generate sound from the sound emitting hole, and the sound can be generated without a cover plate;
the self-excitation buzzer 2 is used, node support is adopted, and the diameter of the cavity inside the shell 1 is consistent with that of the piezoelectric ceramic piece 22, so that the piezoelectric ceramic piece can emit larger sound pressure, and the vibration frequency is convenient to control.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a contact pin formula area feedback utmost point low frequency buzzer which characterized in that:
the self-excitation buzzer (2) is composed of a buzzer substrate (21), a piezoelectric ceramic piece (22) positioned in the middle of the buzzer substrate (21) and a bulb feedback electrode (23);
the self-excitation buzzer (2) is arranged inside the shell (1), the diameter of the piezoelectric ceramic piece (22) is the same as that of an inner cavity of the shell (1), and a first pinhole (11), a second pinhole (12) and a third pinhole (13) are distributed on the shell (1) at equal angles;
the self-excitation buzzer (2) is connected with the piezoelectric ceramic piece (22) through a contact pin.
2. The contact pin type very low frequency buzzer with feedback according to claim 1, characterized in that: the contact pin includes contact pin A (31), contact pin B (32) and contact pin C (33), use clockwise to be equipped with solder joint A (311), solder joint B (321) and solder joint C (331) respectively as the direction on buzzer piece base sheet (21), the one end of contact pin A (31) is inserted the inside of first pinhole (11), the other end of contact pin A (31) with solder joint A (311) welding, the one end of contact pin B (32) is inserted the inside of second pinhole (12), the other end of contact pin B (32) with solder joint B (321) welding, the one end of contact pin C (33) is inserted the inside of third pinhole (13), the other end of contact pin C (33) with solder joint C (331) welding.
3. The contact pin type very low frequency buzzer with feedback according to claim 1, characterized in that: the shell (1) is a round shell, the outer side wall of the shell (1) is integrally formed with three bosses at equal angles, and the first pin hole (11), the second pin hole (12) and the third pin hole (13) are correspondingly formed in the bosses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119367.3U CN215770491U (en) | 2021-09-03 | 2021-09-03 | Contact pin type very low frequency buzzer with feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119367.3U CN215770491U (en) | 2021-09-03 | 2021-09-03 | Contact pin type very low frequency buzzer with feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215770491U true CN215770491U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122119367.3U Active CN215770491U (en) | 2021-09-03 | 2021-09-03 | Contact pin type very low frequency buzzer with feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215770491U (en) |
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2021
- 2021-09-03 CN CN202122119367.3U patent/CN215770491U/en active Active
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